BIOS firmware for the ASRock X470 Taichi AM4 motherboard, reportedly taken from a system running a Ryzen 7 1700 eight-core processor. The JD token in the name is not explained. The 21 MB RAR archive should contain an image for restoring the board's SPI flash with a programmer when the original firmware is corrupt. Check the unpacked image against the chip capacity before writing. Back up the existing contents first, since they may hold board-specific data you would want to keep.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @jdbiosworld. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →